Problem summary
Polygons created from using the Patch tool on a B-Spline curve are twisted.
Customer reported version
modo.12.0v1
Customer reported platform
windows10
Steps to reproduce
1) Download the attached scene file. It contains 2 item layers: a closed B-Spline curve and a closed Bezier curve.
2) In the Model Toolbox, switch to the Curve tab. Select the Patch tool and then select the Bezier curve in the 3D Viewport. Knots will appear on each edge of the Bezier curve - to create a Polygon, select the Knots in an adjacent sequence:
3) Now use the Patch tool on the B-Spline curve; the resulting polygon is twisted:
Workaround
n/a
Reproduced by support
This bug has been reproduced in:
Windows 10
12.1v1 RC 3
12.0v1
11.2v3
10.2v4
10.1v1
macOS 10.13
12.0v1
10.1v1
Earliest version tested
10.1v1 - This feature did not exist before this version
Expected behaviour
A uniform polygon to be created using the B-Spline curve to as the boundary.
Actual behaviour
The resulting polygon is twisted.
